import {
  NavigationProp,
  RouteProp,
  useNavigation,
  useRoute,
} from "@react-navigation/native";
import { useCallback, useEffect, useState } from "react";
import { ScrollView, StyleSheet, View } from "react-native";
import { Button, IconButton, Text } from "react-native-paper";
import { MARGIN, PADDING } from "./constants";
import { planRepo, setRepo } from "./db";
import { defaultSet } from "./gym-set";
import StackHeader from "./StackHeader";
import Switch from "./Switch";
import { DAYS } from "./time";
import AppInput from "./AppInput";
import { StackParams } from "./AppStack";
import { DrawerParams } from "./drawer-param-list";

export default function EditPlan() {
  const { params } = useRoute<RouteProp<StackParams, "EditPlan">>();
  const { plan } = params;
  const [title, setTitle] = useState<string>(plan?.title);
  const [days, setDays] = useState<string[]>(
    plan.days ? plan.days.split(",") : []
  );
  const [workouts, setWorkouts] = useState<string[]>(
    plan.workouts ? plan.workouts.split(",") : []
  );
  const [names, setNames] = useState<string[]>([]);
  const { navigate: drawerNavigate } =
    useNavigation<NavigationProp<DrawerParams>>();
  const { navigate: stackNavigate } =
    useNavigation<NavigationProp<StackParams>>();

  useEffect(() => {
    setRepo
      .createQueryBuilder()
      .select("name")
      .distinct(true)
      .orderBy("name")
      .getRawMany()
      .then((values) => {
        console.log(EditPlan.name, { values });
        setNames(values.map((value) => value.name));
      });
  }, []);

  const save = useCallback(async () => {
    console.log(`${EditPlan.name}.save`, { days, workouts, plan });
    if (!days || !workouts) return;
    const newWorkouts = workouts.filter((workout) => workout).join(",");
    const newDays = days.filter((day) => day).join(",");
    await planRepo.save({
      title: title,
      days: newDays,
      workouts: newWorkouts,
      id: plan.id,
    });
  }, [title, days, workouts, plan]);

  const toggleWorkout = useCallback(
    (on: boolean, name: string) => {
      if (on) {
        setWorkouts([...workouts, name]);
      } else {
        setWorkouts(workouts.filter((workout) => workout !== name));
      }
    },
    [setWorkouts, workouts]
  );

  const toggleDay = useCallback(
    (on: boolean, day: string) => {
      if (on) {
        setDays([...days, day]);
      } else {
        setDays(days.filter((d) => d !== day));
      }
    },
    [setDays, days]
  );

  return (
    <>
      <StackHeader
        title={typeof plan.id === "number" ? "Edit plan" : "Add plan"}
      >
        {typeof plan.id === "number" && (
          <IconButton
            onPress={async () => {
              await save();
              const newPlan = await planRepo.findOne({
                where: { id: plan.id },
              });
              let first = await setRepo.findOne({
                where: { name: workouts[0] },
                order: { created: "desc" },
              });
              if (!first) first = { ...defaultSet, name: workouts[0] };
              delete first.id;
              stackNavigate("StartPlan", { plan: newPlan, first });
            }}
            icon="play"
          />
        )}
      </StackHeader>
      <View style={{ padding: PADDING, flex: 1 }}>
        <ScrollView style={{ flex: 1 }}>
          <AppInput
            label="Title"
            value={title}
            onChangeText={(value) => setTitle(value)}
          />
          <Text style={styles.title}>Days</Text>
          {DAYS.map((day) => (
            <Switch
              key={day}
              onChange={(value) => toggleDay(value, day)}
              value={days.includes(day)}
              title={day}
            />
          ))}
          <Text style={[styles.title, { marginTop: MARGIN }]}>Workouts</Text>
          {names.length === 0 ? (
            <View>
              <Text>No workouts found.</Text>
            </View>
          ) : (
            names.map((name) => (
              <Switch
                key={name}
                onChange={(value) => toggleWorkout(value, name)}
                value={workouts.includes(name)}
                title={name}
              />
            ))
          )}
        </ScrollView>

        <Button
          disabled={workouts.length === 0 && days.length === 0}
          style={styles.button}
          mode="outlined"
          icon="content-save"
          onPress={async () => {
            await save();
            drawerNavigate("Plans");
          }}
        >
          Save
        </Button>
      </View>
    </>
  );
}

const styles = StyleSheet.create({
  title: {
    fontSize: 20,
    marginBottom: MARGIN,
  },
  button: {},
});